Estimate of the intercrystalline adsorption of helium in nickel

Grinik, Eh.U.; Karasev, V. S.

doi:10.1007/bf01146487

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I Vacancy-like Defects In Amorphous Alloys1

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1986

1987

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“…In all cases the concentration of the defects determines the magnitude of their effect. Thus an increase of the concentration CI of single vacancies of 1% induces in crystalline material a fractional decrease of G of 1-2% (Folweiler and Brotzen 1959, Grinik and Karasev 1983, Dederichs et a1 1975:…”

Section: I Vacancy-like Defects In Amorphous Alloysmentioning

confidence: 98%

The reversible relaxation of the shear modulus in amorphous Co-P alloys

Dietz¹,

Stanglmeier²

1987

J. Phys. F: Met. Phys.

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The shear modulus of electrodeposited amorphous CoP was measured via torsional vibrations at about 0.5 MHz after pre-annealing the samples for 20 h at 200 O C. Besides the isostructural, instantaneous change a relaxation of G was observed, which is caused by reversible structural relaxation of the material. During isothermal treatment after a change of the temperature G tends non-monotonically to the new temperature-dependent pseudoequilibrium. This means that at least two types of elementary processes with different kinetics govern the process. Following a concept proposed to explain the relaxation of defect concentrations in crystalline gold the observations presented in this paper are qualitatively described by the alternate play of production and annihilation of single, di-and tri-vacancies.

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Section: I Vacancy-like Defects In Amorphous Alloysmentioning

confidence: 98%